- /* This testdriver assumes POSIX, i.e. _PDCLIB_fd_t being int and being
- incremented by one on each successful open.
- */
- int fh;
- char buffer[ 10 ];
- remove( testfile );
- /* Trying to read non-existent file. */
- TESTCASE( _PDCLIB_open( testfile, _PDCLIB_FREAD ) == _PDCLIB_NOHANDLE );
- /* Writing to file, trying to read from it. */
- TESTCASE( ( fh = _PDCLIB_open( testfile, _PDCLIB_FWRITE ) ) != _PDCLIB_NOHANDLE );
- TESTCASE( write( fh, "test", 4 ) == 4 );
- TESTCASE( lseek( fh, 0, SEEK_SET ) == 0 );
- TESTCASE( read( fh, buffer, 4 ) == -1 );
- TESTCASE( _PDCLIB_close( fh ) == 0 );
- /* Reading from file, trying to write to it. */
- TESTCASE( ( fh = _PDCLIB_open( testfile, _PDCLIB_FREAD ) ) != _PDCLIB_NOHANDLE );
- TESTCASE( write( fh, "test", 4 ) == -1 );
- TESTCASE( _PDCLIB_close( fh ) == 0 );
- /* Appending to file, trying to read from it. */
- TESTCASE( ( fh = _PDCLIB_open( testfile, _PDCLIB_FAPPEND ) ) != _PDCLIB_NOHANDLE );
- TESTCASE( write( fh, "app", 3 ) == 3 );
- TESTCASE( lseek( fh, 0, SEEK_SET ) == 0 );
- TESTCASE( read( fh, buffer, 10 ) == -1 );
- TESTCASE( write( fh, "end", 3 ) == 3 );
- TESTCASE( _PDCLIB_close( fh ) == 0 );
- /* Reading and writing from file ("r+"). */
- TESTCASE( ( fh = _PDCLIB_open( testfile, _PDCLIB_FREAD | _PDCLIB_FRW ) ) != _PDCLIB_NOHANDLE );
- TESTCASE( read( fh, buffer, 10 ) == 10 );
- TESTCASE( memcmp( buffer, "testappend", 10 ) == 0 );
- TESTCASE( lseek( fh, 0, SEEK_SET ) == 0 );
- TESTCASE( write( fh, "wedo", 4 ) == 4 );
- TESTCASE( lseek( fh, 0, SEEK_SET ) == 0 );
- TESTCASE( read( fh, buffer, 10 ) == 10 );
- TESTCASE( memcmp( buffer, "wedoappend", 10 ) == 0 );
- TESTCASE( _PDCLIB_close( fh ) == 0 );
- /* Writing and reading from file ("w+"). */
- TESTCASE( ( fh = _PDCLIB_open( testfile, _PDCLIB_FWRITE | _PDCLIB_FRW ) ) != _PDCLIB_NOHANDLE );
- TESTCASE( write( fh, "test", 4 ) == 4 );
- TESTCASE( lseek( fh, 1, SEEK_SET ) == 1 );
- TESTCASE( read( fh, buffer, 2 ) == 2 );
- TESTCASE( memcmp( buffer, "es", 2 ) == 0 );
- TESTCASE( write( fh, "sie", 3 ) == 3 );
- TESTCASE( lseek( fh, 0, SEEK_SET ) == 0 );
- TESTCASE( read( fh, buffer, 6 ) == 6 );
- TESTCASE( memcmp( buffer, "tessie", 6 ) == 0 );
- TESTCASE( _PDCLIB_close( fh ) == 0 );
- /* Appending and reading from file ("a+"). */
- TESTCASE( ( fh = _PDCLIB_open( testfile, _PDCLIB_FAPPEND | _PDCLIB_FRW ) ) != _PDCLIB_NOHANDLE );
- TESTCASE( write( fh, "baby", 4 ) == 4 );
- TESTCASE( lseek( fh, 0, SEEK_SET ) == 0 );
- TESTCASE( read( fh, buffer, 10 ) == 10 );
- TESTCASE( memcmp( buffer, "tessiebaby", 10 ) == 0 );
- TESTCASE( _PDCLIB_close( fh ) == 0 );
- /* Cleaning up. */
- TESTCASE( remove( testfile ) == 0 );